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Plasma cascaded solid wastes for possible adsorption of NO2 in diesel exhaust

Sahu, A and Mishra, S and Jain, P and Rajanikanth, BS (2023) Plasma cascaded solid wastes for possible adsorption of NO2 in diesel exhaust. In: Waste Disposal and Sustainable Energy .

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Official URL: https://doi.org/10.1007/s42768-023-00158-y


Extensive use of fossil fuel has led to an increase in solid and gaseous particulates in the environment, which in turn necessitated newer, effective, and economical control strategies to abate pollutants, particularly gaseous pollutants. In the current research work, focus has been placed on utilizing industry wastes to adsorb nitrogen oxides present in diesel engine exhaust, which is pre-treated by plasma. Sampled exhaust from a 5 kW diesel generator is exposed to discharge plasma where the oxidation of nitric oxide to nitrogen dioxide occurs, which is then made to flow through another reactor filled with industry wastes drawn from agriculture, foundry, utility, marine industry, etc., comprising mulberry waste, rice husk, wheat husk, areca nut husk, sugarcane bagasse, coffee husk, foundry sand, lignite ash, red mud, and oyster shells. While the adsorption of nitrogen dioxide was observed in all the wastes, reduction of nitric oxide was observed in metallic compound-based industry wastes. At about 184 J/L, specific energy plasma cascaded industrial waste red mud yielded 98% NOx removal efficiency, and that with agriculture rice husk waste yielded 53% NOx removal. TiO2/Fe2O3 present in industry wastes might have exhibited photo-catalysis in visible light resulting in the possible reduction of NO. A new pathway for recycling the waste can be expected through nitrogen dioxide adsorption, and the results are further discussed with respect to plasma-alone and cascaded plasma adsorbent systems.

Item Type: Journal Article
Publication: Waste Disposal and Sustainable Energy
Publisher: Springer
Additional Information: The copyright for this article belongs to the Springer.
Keywords: Agriculture waste; Diesel exhaust; Electrical discharge; Industry waste; Nitrogen oxide reduction; Plasma adsorption.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 24 Jul 2023 05:33
Last Modified: 24 Jul 2023 05:33
URI: https://eprints.iisc.ac.in/id/eprint/82615

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